Try using different pads or making your own out of some high density closed cell foam from a hardware store. Place them temporarily with some tape to see how the fit works. Then use pieces of glue-on (or stick on) velcro, or just glue the pads to secure them
Shred Ready's have a tendency to fit that way (wide on the sides, pressure on the forehead). I was not able to use their full face helmet because of that exact reason, but I actually find the T-Dub to fit well. Depending on your head shape/ size SR's just might not be an option for you.